Rotary engine.



C. F. DE MEY.

Patented Nov. 19, 1918.

v fli ewivz CHARLES F. DE MEY, OF LOS ANGELES, CALIFORNIA.

ROTARY ENGINE.

To all whom it may concern:

Be it known that I, CHARLES F. DE MEY,

a citizen of the United States, residing at Los Angeles, in the county of Los Angeles, State of California, have invented new and useful Improvements in Rotary Engines, of which the following is a specification.

One of the objects of this invention is to deliver the power to the head of the piston practically the full cycle.

Another object of my invention is to get an even torque (where two or more units are used) at any speed.

Another object is to use the power directly on the piston, and not as a frictional pressure, as in the steam turbine.

Another object of my invention is to eliminate the number of rotating and reciprocating parts, thereby simplifying the construction and operation.

From these objects it may be seen that a self contained unit is obtained, getting the maximum power with the least mechanical and frictional loss.

The engine is adapted to any motor fluid under pressure, such as steam, compressed air, gases or the like.

I accomplish the above recited objects by means of the mechanism described herein and illustrated in the accompanying drawings, in which:

Figure 1 is a side view of my improved rotary engine.

Fig. 2 is a cross section taken on line 22 of Fig. 1.

Fig. 3 is a section through the cylinder groove showing the piston as it starts its cycle.

Fig. 4 is a section through the cylinder groove showing the piston at the completion of its cycle.

In the accompanying drawings, 5 indicates the casing or body of the rotary engine. 6 indicates a peripheral groove in housing 5, which forms a cylinder, in which the piston 7 travels concentric to the shaft, indicated by 11. A slide valve 8 is provided to prevent the pressure from escapingbackward through the groove 6, and confining all of the pressure on piston 7. Slide valve 8 is retained closed by means of spring 9 and opened by a cam, indicated by 10. As cam 10 rotates with the shaft 11, the roller 12 rides upward as the nose of the cam comes in action, thereby raising the slide valve 8 Specification of Letters Patent.

' BatentedNomfl), 1918.

Application filed July 7, 1917. Serial No. 179,263.

and permitting piston 7 to travel by the point, usually sealed by slide valve 8.

The nose of the cam 10 has a pitch which increases gradually as it forces slide valve 8 upward and open, and the pitch drops away sharply after reaching the extreme tip of the cam nose. This allows the slide valve 8 to be opened rather slowly and to close very quickly. Piston 7 is integral with cam 10, and in this manner the piston drives the cam, which is keyed or otherwise suitably fastened to shaft 11. Disposed on shaft 11 is an eccentric 14 which operates valve 15.

Valve 15 controls the suppl of steam, opening as soon as the piston 7 passes the inlet port 16, and closes as soon as piston 7 starts to uncover the exhaust port 17, thus delivering power to the piston practically the full cycle. Cam 10 is held in place by retaining means 18 which is herein shown as a thrust bearing of the usual type. Bearing 18 is retained by set screws 19, which may be adjusted to suit conditions. In this way the open side of groove 6 is sealed, preventing the loss of steam pressure.

In the event of wear between cam 10 and body 5, the difierence may be readily overcome by tightening set screws 19, which are locked in place by a lock nut 21. In this way the space between cam 10 and housing 5 can at all times be kept under a given pressure.

The steam or driving power is delivered through the pressure line 20, and when valve 15 is opened by means of eccentric 14 the steam is allowed to pass through port 16, exerting a pressure on the piston 7 which has just passed port 16 on the beginning of its cycle. Valve 15 is retained open by eccentric 14 until such time as piston 7 reaches the exhaust port 17. At this time the eccentric 14 allows valve 15 to close, and the momentum of the rotating parts, or the adjoining unit, when constructed with a series of units, carries piston 7 toward slide valve 8.

As the piston 7 and cam 10 are integral, the cam 10 has been raising slide valve 8 since the piston reached exhaust ort 17, so by the time piston 7 reaches t e point that the slide valve 8 occupies, it has been raised upwardly by cam 10 leaving the groove 6 open for the progress of piston 7. As soon as piston 7 passes the point to be occupied by slide valve. 8, the decline on the Cir nose of cam 10 allows the slide valve 8 to drop, closing groove 6 in the rear of piston .7, thereby forming a cylinder closed at one end by slide valve 8 in which is piston 7. At this time piston 7 has passed the port 16, the eccentric 14: has opened valve "15,

and the piston 7 has started on anot her power cycle.

Shaft 11 may be extended and any-suitable means provided to deliver power obtained in the before mentioned cycle.

It will be noted from the foregoing that I have only described one complete operating unit, but as many of these units as desired may be connected. When connected in series the moment of power intermission While piston 7 is passing from exhaust port 17 toinlet port 16, should be lapped according to the number of units employed, thereby obtaining an unbroken flow of power.

Copies the inlet opening.

actuated baffle plate mounted in the casing "and adapted to project across the "annular groove between the inlet and outlet openings, a plate secured to the shaft adapted to close the annular "channeli and carrying a segmental piston vadapted to project into the'groove, acam formed on said plate for actuating the bafiie plate ,1anda camsecured to the shaftvit'or actuatinga valvecontrolling In Witness that I claim the foregoing I have hereunto subscribed my name this 8th day-of-June, 1917.

'0. Film; MEY, M. n.

of this patent may be obtained for five cents each, by addressing the"0ommissioner oflatents,

Washington, I). 0. 

